LifestyleExercise

Physical exercise is associated with better sleep quality in university students, mediated by reduced mobile phone addiction and rumination

Q: How does physical exercise improve sleep quality in students?

The study suggests it works by reducing mobile phone addiction and rumination, which are linked to poor sleep.

Q: What was the sample size and population?

1,300 college students from seven universities were surveyed.

Q: Is this a causal relationship?

No, the cross-sectional design shows associations but cannot prove causation.

Q: What scales were used to measure sleep quality?

The Pittsburgh Sleep Quality Index (PSQI) was used, where higher scores indicate poorer sleep.

A cross-sectional study of 1,300 university students found that physical exercise negatively predicted PSQI scores (β = -0.022, p < 0.01), indicating better sleep quality. This association was mediated by a chain pathway through reduced mobile phone addiction and rumination.

Last updated: Jul 29, 2026•0 RCTs•📖 Read as article →

Evidence Score

Evidence Score38/100

Human RCT☆☆☆☆☆

Meta-analysis☆☆☆☆☆

Mechanism★★★★★

Safety★★★★☆

Confidencelow

Study Evidence

Study 1. How Physical Activity is Associated With Sleep Quality Through Mobile Phone Addiction and Rumination in University Students.

observational

Wang J, Liu YG, Dou GB, Xia QF, Liu Y · Journal of visualized experiments : JoVE (2026)

Participants: N/A

Duration: N/A (cross-sectional)

Intervention: Physical exercise (measured by Physical Activity Rating Scale, no specific dose reported)

Outcome: Sleep quality (measured by Pittsburgh Sleep Quality Index, PSQI score)

Effect Size: β = -0.022 (direct effect on PSQI); chain mediation model statistically significant

Population: University students from seven universities (n=1,300)

Result:

PubMed: 42507619 DOI: 10.3791/71352

Mechanism Graph

Physical exercise reduces mobile phone addiction

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Lower mobile phone addiction reduces rumination

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Lower rumination improves sleep quality (lower PSQI scores)

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Result: Chain mediation model linking physical exercise to better sleep quality

Limitations

⚠Cross-sectional design prevents causal inference
⚠Self-reported measures may introduce bias
⚠Specific exercise dose (type, frequency, intensity) not reported

Frequently Asked Questions

How does physical exercise improve sleep quality in students?▼

The study suggests it works by reducing mobile phone addiction and rumination, which are linked to poor sleep.

What was the sample size and population?▼

1,300 college students from seven universities were surveyed.

Is this a causal relationship?▼

No, the cross-sectional design shows associations but cannot prove causation.

What scales were used to measure sleep quality?▼

The Pittsburgh Sleep Quality Index (PSQI) was used, where higher scores indicate poorer sleep.

Products

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References

1.Wang J, Liu YG, Dou GB, Xia QF, Liu Y. "How Physical Activity is Associated With Sleep Quality Through Mobile Phone Addiction and Rumination in University Students.." Journal of visualized experiments : JoVE, 2026. PMID: 42507619 DOI: 10.3791/71352

Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.